Bath-cap-reenforcing machine



June 12, 1923. 1,458,801

J. w. BRUNDAGE BATH CAP REENFORCING MACHINE Filed Jan.- 3, 1922 2 Sheets-Sheet 1 Jamar IMBrzznday'e,

Moon Md,

June 12, 1923.

J. W. BRUNDAGE BATH CAP REENFORCING MACHINE Filed Jan. 3, 1922 2 Sheets-Sheet 2 Patented- June 12, 1923.

UNITED STATES 1,458,801 PATENT FF1E.

JAMES W. BRI INDAGE, 0F AKRON, OHIO.

nacrn-car-nnnnroncme MACHINE.

Application filed January 3, 1922. Serial No. 526,828.

. ments in apparatus used in the manufacture of articles made from thin sheet rubber, such for example, as bathingcaps, baby diapers, etc. Heretofore in the manufacture of these it has been found desirable to connect the several blanks forming the complete article by cutting the edges together by a die which simultaneously severs the blanks and unites the edges, giving anedge to edge joint.

It sometimes occurs that such seams give way or open up, especially after the articles have been exposed to sunlight, and to guard against this, manufacturers have applied strips of sheet rubber over the seams, afiixing the same by hand and securing adhesion by the use of a suitable cement, which is a procedure involving material skill or care, and. requiring considerable time.

The present invention aims to provide a simple, durable, economical and efiicient device by which such strips may be applied and secured in place in an accurate and expeditious manner, and the invention includes the novel features of construction and arrangement and combination of parts hereinafter described and particularly defined by the appended claims.

An embodiment of my invention is illustrated in the accompanying drawings in which- Figure 1 is a side elevation of the device or apparatus.

Fig.2 is an end view.

Fig. 3 a plan view; and

Fig. 4 a vertical section through the two coacting pressing rollers or discs.

Referring by reference characters to these drawings the numeral 1 designates a base supporting the standards 2 and 3 which may forhconvenience be formed integral therewit A roller or disc 4 is located in a forked upper end of the standard and journal upon a. pin or shaft 5 carried thereby. This roller cooperates with a roller 8 fast on a shaft 9 journaled in a bifurcated portion of .a rocking arm 6 pivotally mounted upon a pin 7 carried by the arms 2 of the standard 2.

The peripheries of the rollers 4 and 8 are of male and female formation, and in the embodiment shown the periphery of the roller 1 is of wedge shape in cross section, while the roller 8 has a V-shaped annular channel therein, the walls of which are inclined to a degree corresponding substantially to the wedge shaped walls-of the roller 4.

In operation the rollers lie in contact with each other and as they are rotated the seamed portion of the sheet is fed in between the rollers with the scam in line with the apices of the rollers and the strip is fed to thebight of the rolls and centrally thereof from a supply device which may take the form of a roll 20, the alignment of the strip with the seam being ensured by a guide 17. The seamed sheet is indicated at 21 and the reenforcing strip at 22.

Therolls may be rotated in any convenient manner, but a convenient means for effecting this is to provide the shaft 9 of pulley 8 with a gear 10 fast thereon which meshes with a gear 11 fast on countershaft 12 which is provided with operating crank 13, the r0114 being rotated by the frictional contact as the material is drawn therebetween by the rotation of roller 8.

Roll 8 is pressed downward to bear on the goods with sufficient pressure by spring 14 acting on lever arm G and can be raised from the roll 4 by means of crank 16 fast on shaft 15 journaled in standard arm 2 and carrying acam 15 bearing against the under side of the lever arm 6.

A fixed guard or stripper 18 is provided snugly fitting the periphery of roll 4 and serves to prevent the article being drawn between the roll and standard.

To operate the device the end of the .strip of reenforcing material is passed through the guide 17 and after raising roll 8 by means of eccentric lever 16, is passed between the two rollers. Roll 8 is now lowered so as to bring spring 14 into use. The seam to be reinforced is now laid on roller 4 so as to coincide with the sharp central edge and by turing the crank 13 is fed between the two rollers. As the end of the seam is reached, the article clears the bite of the rolls and the reenforcing strip is severed near the article. As the strip itself is already between the rolls it is not necessary to again raise roll 8 until the end of the strip is reached and a new strip is to be started. The strip attached to the cap is afterwards trimmed off where it projects beyond the head-band.

It will be readily observed that with a pair of contacting rollers having coacting male and female peripheries such as de scribed there cannot be a true rolling contact throughout the contacting portions 0wing to the fact that the apices and side margins travel at different speeds, and hence some slippage must occur between portions of the coat-ting surfaces. This I have found results in a wiping action which tends to unite the strip to the goods more firmly.

I have also found that if the peripheries of both rolls are made smooth there is a tendency for the material to be wrinkled or distorted and that by making the periphery of one of the rollers knurled this objection is avoided and a better reunion of the strip to the seamed sheet is effected, and the resulting article has a better appearance. In practice I make the lower or idle roll smooth and of soft metal and the driving roll knurled and of hardened metal as I find that this gives the best results.

Having thus described my invention, what I claim is- 1. Apparatus for applying asurface strip of rubber to a seamed sheet comprising a pair of coacting rolls, one having a female or channeled periphery and the other a corresponding periphery of male formation.

2. Apparatus for applying a surface strip of rubber to a seamed sheet comprising a pair of coacting rolls, one-having afemaleor channeled periphery and the other a corresponding periphery of male formation, one of said rolls having a knurled periphery.

3. Apparatus for applying a surface strip of rubber to a seamed sheet comprising a pair of coacting rolls, one having a 'V-shaped peripheral groove and the other a periphery wedge shaped in cross section.

4. Apparatus for applying a surface strip of rubber to a seamed sheet comprising a pair of coacting rolls, one having a periphery provided with a V-shaped groove and the other a periphery of wedge shaped in cross section, the peripheral surface of one of the rolls being-knurled.

5. In combination, a roll journaled on a fixed axis, a swing arm carrying a coacting roll, said rolls having respectively male and female peripheries, means acting on said swinging arm for pressing its roll toward said first named, roll, means for drivmg one of said rolls, and means for operating said swinging arm to separate the rolls.

6. In apparatus for the purpose described, a pair of coacting rolls having male and female peripheries, means for yieldingly pressing one of said rolls towards the other, a curved guide coacting with one of the rolls, and a stripper device coacting with the other roll.

T. An apparatus for the purpose described comprising a base, a bearing member supported thereby. an idle rollrotatably carried by said member and having a wedge shaped periphery, a standard supported by said base having a forked upper end, an arm pivoted to one of said forks, a roll journaled at the free end of said arm having a V.-shaped periphery coactingwith the periphery of said first named roll. a spring action on said arm tending to hold said rolls in contact, a cam carried by the other fork and bearing on the under side of said arm and provided with operating means, means for operating said arm. and means for rotating one of saidrollers.

8. An apparatus for the purpose described comprising a base. a bearing member supported thereby, an idle roll rotatably carried by said member and having a wedge shaped periphery, a standard supported by said base having'a forked upper end, an arm pivoted to one of said forks. a roll journaled at the free end of said arm having a V-shaped periphery coacting with the periphery of said first named roll, a spring acting on said arm tending, to hold said rolls in contact, a cam carried by the other as up fork and bearing on the under side of said arm and provided with operating means, means for-operating said arm, and means carried by said arm for driving the-roller carried thereby.

9. Apparatus of the character described comprising a roll journaled on a fixed axis, an arm pivoted to swing in the plane of said roll, a second roll carried by the free end of said arm, said rolls having corresponding male and female peripheries, and a crank shaft journaled on said swinging arm and having driving connections to said second roll.

In testimony whereof I afiix my signature.

JAMES W. BRUNDAGE. 

